Anthony Slide mentions Galetti’s Monkeys as one of the important trained animal acts of vaudeville. The poster above is from 1892, and I find references to them as late as 1907.
To find out more about the history of vaudeville, consult No Applause, Just Throw Money: The Book That Made Vaudeville Famous, available at Amazon, Barnes and Noble, and wherever nutty books are sold.
And check out my new book: Chain of Fools: Silent Comedy and Its Legacies from Nickelodeons to Youtube, just released by Bear Manor Media, also available from amazon.com etc etc etc
(Travalanche) 